CUET Questions — Physics
362 solved questions with detailed explanations
Q12. Match List - I with List - II. List - I (A) The current lags behind the emf by π/4 in phase (B) The e.m.f. lags behind the current by π/4 in phase (C) The current lags behind the e.m.f. in phase
Q16. During the p-n junction formation, when an electron diffuses from nn → p, it leaves behind an: (a) ionised acceptor on n-side (b) ionised donor on n-side (c) ionised donor on p-side (d) ionised d
Q38. A ray of light passes through four transparent media with refractive index μ₁,μ2,µ3 and µ₁ shown in figure. The surfaces of all media are parallel. If BC and DE are parallel, we must have A μ E 3
Q13. Match List - I with List - II. List - I (A) Low Mass number nuclei (B) Electron microscope (C) Beta decay (D) U-235 List - II (I) Medium penetrating power (II) Nuclear reactor (III) Diffracted el
Q24. If the frequency of light in a photoelectric experiment is doubled the stopping potential will be:
Q1. The magnetic flux(Φ) is:
Q10. Which of the following is an example of nuclear fusion? (a) Formation of Ba and Kr from 144 56 235 94 4 89 36 235 92 (b) Formation of Pu from U 2 1 (c) Formation of 2 He from H 235 U 92 (d) Forma
Q4. What is the mathematical expression for potential gradient? (a) dv/rdr (b) dE/dr (c) dv/dr (d) dv/dA
Q14. What is the value of V₀ if the silicon diode starts conducting at 0.7 V while the Germanium start conducting at 0.3 V? [Circuit diagram showing a 12V source, 5kΩ resistor, a Silicon diode, and a
Q31. Calculate the Ratio of Range of Transmitting antenna of height 64 m to the receiving antenna of height 16 m: (a) 4:1 (b) 1:4 (c) 2:1 (d) 1:2
Q26. Cell having an emf E and internal resistance r is connected across a variable external resistance R. As the resistance R is increased, the plot of potential difference V across R is given by: (a)
Q37. A point charge q moves from point A to point D along the path ABCD (as shown) in a uniform electric field E pointing parallel to negative direction of X-axis. The co-ordinates of A, B, C, D are (
Q46. Which of the following is not a significant characteristic of a pulse? (a) Pulse amplitude (b) Pulse width (c) Pulse position (d) Pulse duration modulation
Q29. A e.m.f. es = 50sin 314t is applied across a pure capacitor of 637µF. The instantaneous current I is: (a) 10cos 314tA (b) 50cos 314tA (c) 20cos 314tA (d) 20sin 314tA
Q12. Which of the following statements are collect about transformers? A. Transformers cannot be used to step up DC. B. The frequency of output across the secondary is always equal to the frequency of
Q31. An AC current is given by I = i₁ coswt + i₂sinwt The rms current is given by: (a) (i₁+i₂)/√2 (b) √((i₁²+i₂²)/2) (c) √(i₁²+i₂²)/2 (d) √((i₁+i₂)²)/2
Q14. Which of the following statements are correct: A. In semiconductor diodes carriers are generated by photo-excitation. B. When the photo diode is illuminated with light with energy (E) > Energy ga
Q8. In equation P = Ec⁻¹, where P is momentum, E is energy and c is the speed of light. In which of the following options, this equation is valid: (a) for an electron only (b) for a photon but not for
Q11. A long straight wire of circular cross section with radius 'a' carries steady current 'I' which is uniformly distributed across the cross-section. The magnetic field in the region r < a and r > a
Q20. A 20-watt, 50 V lamp is to be connected to AC mains of 250 V, 50 Hz. Calculate the value of series capacitor to run the lamp. (a) 1.4 µF (b) 2.1 µF (c) 3.5 µF (d) 4.9 µF